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| author | Stefan Behrens <sbehrens@giantdisaster.de> | 2011-11-01 17:06:04 +0100 |
|---|---|---|
| committer | Stefan Behrens <sbehrens@giantdisaster.de> | 2011-12-21 19:14:16 +0100 |
| commit | c975dd469d748ce619c510050d4fb407c2398591 (patch) | |
| tree | 32d8e10eb8599d2b72171e410c41082f1d7dcc5b /fs | |
| parent | 5db0276014b80484689eb6c1bf7b94af1c7d5b1a (diff) | |
| download | lwn-c975dd469d748ce619c510050d4fb407c2398591.tar.gz lwn-c975dd469d748ce619c510050d4fb407c2398591.zip | |
Btrfs: add config option to enable btrfs integrity check
Added the BTRFS_FS_CHECK_INTEGRITY option to Kconfig. It depends on
BTRFS_FS.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig index ecb9fd3be143..d33f01c08b60 100644 --- a/fs/btrfs/Kconfig +++ b/fs/btrfs/Kconfig @@ -31,3 +31,22 @@ config BTRFS_FS_POSIX_ACL Linux website <http://acl.bestbits.at/>. If you don't know what Access Control Lists are, say N + +config BTRFS_FS_CHECK_INTEGRITY + bool "Btrfs with integrity check tool compiled in (DANGEROUS)" + depends on BTRFS_FS + help + Adds code that examines all block write requests (including + writes of the super block). The goal is to verify that the + state of the filesystem on disk is always consistent, i.e., + after a power-loss or kernel panic event the filesystem is + in a consistent state. + + If the integrity check tool is included and activated in + the mount options, plenty of kernel memory is used, and + plenty of additional CPU cycles are spent. Enabling this + functionality is not intended for normal use. + + In most cases, unless you are a btrfs developer who needs + to verify the integrity of (super)-block write requests + during the run of a regression test, say N |